diff --git a/src/Cmd.cpp b/src/Cmd.cpp
index e3da9f670..37f8f3959 100644
--- a/src/Cmd.cpp
+++ b/src/Cmd.cpp
@@ -134,6 +134,7 @@ void Cmd::load ()
     commands.push_back ("_ids");
     commands.push_back ("_config");
     commands.push_back ("_version");
+    commands.push_back ("_sha1");
     commands.push_back ("_urgency");
     commands.push_back ("_query");
 	 commands.push_back ("_zshcommands");
@@ -243,6 +244,7 @@ bool Cmd::isReadOnlyCommand ()
       command == "_ids"                                                      ||
       command == "_config"                                                   ||
       command == "_version"                                                  ||
+      command == "_sha1"                                                     ||
       command == "_urgency"                                                  ||
       command == "_query"                                                    ||
       command == "_zshcommands"                                              ||
diff --git a/src/Context.cpp b/src/Context.cpp
index ed155cb9a..f3c55e148 100644
--- a/src/Context.cpp
+++ b/src/Context.cpp
@@ -269,6 +269,7 @@ int Context::dispatch (std::string &out)
   else if (cmd.command == "_ids")             { rc = handleCompletionIDs         (out); }
   else if (cmd.command == "_config")          { rc = handleCompletionConfig      (out); }
   else if (cmd.command == "_version")         { rc = handleCompletionVersion     (out); }
+  else if (cmd.command == "_sha1")            { rc = handleSha1                  (out); }
   else if (cmd.command == "_urgency")         { rc = handleUrgency               (out); }
   else if (cmd.command == "_query")           { rc = handleQuery                 (out); }
   else if (cmd.command == "_zshcommands")     { rc = handleZshCompletionCommands (out); }
diff --git a/src/command.cpp b/src/command.cpp
index 2a8e9e222..1931960fb 100644
--- a/src/command.cpp
+++ b/src/command.cpp
@@ -529,6 +529,20 @@ int handleCompletionVersion (std::string& outs)
   return 0;
 }
 
+////////////////////////////////////////////////////////////////////////////////
+// A simple SHA1 display for use during development to identify which task
+// version one is running.
+int handleSha1 (std::string& outs)
+{
+#ifdef HAVE_COMMIT
+  outs = COMMIT;
+#else
+  outs = "No SHA1 available";
+#endif
+  outs += "\n";
+  return 0;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // Temporary command to display urgency for a task.
 int handleUrgency (std::string& outs)
diff --git a/src/main.h b/src/main.h
index 2ff0caacd..d5153af7d 100644
--- a/src/main.h
+++ b/src/main.h
@@ -67,6 +67,7 @@ int handleCompletionCommands (std::string&);
 int handleCompletionIDs (std::string&);
 int handleCompletionConfig (std::string&);
 int handleCompletionVersion (std::string&);
+int handleSha1 (std::string&);
 int handleUrgency (std::string&);
 int handleQuery (std::string&);
 int handleZshCompletionCommands (std::string&);